adamant

Adamant is a 7 letter word which starts with the letter A and ends with the letter T for which we found 2 definitions.

Definition

(n.) A stone imagined by some to be of impenetrable hardness; a name given to the diamond and other substances of extreme hardness; but in modern mineralogy it has no technical signification. It is now a rhetorical or poetical name for the embodiment of impenetrable hardness.